Software configuration in preparation for clip input and output session involves editing the software initialisation configuration file on a Linux system, or using the Smoke Setup utility on Mac system.
On a Mac system, in the Smoke Setup application, in the VTR tab, enable every VTR you plan on using with Smoke. Also verify the Preview tab for the timings you want to make available to your projects. If you do not have a sync connected to your workstation, you might want to define for your project some free run timings. They are turned off by default.